TBI with ECM or Carburator
Thread Starter
Junior Member
Joined: Feb 2011
Posts: 82
Likes: 0
Car: 92 camaro RS
Engine: Moded 350 engine
Transmission: 5 speed
TBI with ECM or Carburator
Hi
I have a TBI 305 engine. I wanting to do a build. Unfortunately I don't know enough about the TBI and the ECM.
What set up, carburetor or TBI with computer, will put out better numbers overall? Assuming I do intake, cam, and headers.
Basically, do I keep the computer and do the intake, cam, and headers with my current TBI or do I get a carburetor that has a higher CFM rating?
Thanks
Another option is get a 350. Do intake, cam, headers. Put it in my car, get a new chip for the ECM and anything else required for the swap THEN, put my old TBI unit on top? Will that put out good/respectable numbers? Will the TBI unit keep up? Or go Carburator with this option?
I have a TBI 305 engine. I wanting to do a build. Unfortunately I don't know enough about the TBI and the ECM.
What set up, carburetor or TBI with computer, will put out better numbers overall? Assuming I do intake, cam, and headers.
Basically, do I keep the computer and do the intake, cam, and headers with my current TBI or do I get a carburetor that has a higher CFM rating?
Thanks
Another option is get a 350. Do intake, cam, headers. Put it in my car, get a new chip for the ECM and anything else required for the swap THEN, put my old TBI unit on top? Will that put out good/respectable numbers? Will the TBI unit keep up? Or go Carburator with this option?
Junior Member
Joined: Jan 2012
Posts: 25
Likes: 0
From: indiana
Car: 87 Iroc
Engine: 305 for now
Transmission: 700r4
Axle/Gears: 10 bolt posi 3.08 gears
Re: TBI with ECM or Carburator
depends what your wanting it for id say go with the 350 ive never really heard of tbi for perfomance id go with a carb or maybe a tpi setup
Junior Member
Joined: Jan 2012
Posts: 25
Likes: 0
From: indiana
Car: 87 Iroc
Engine: 305 for now
Transmission: 700r4
Axle/Gears: 10 bolt posi 3.08 gears
Re: TBI with ECM or Carburator
if i can buy this lt1 off another guy on here and get it put in my car ill sell you my tpi
Joined: Jul 2007
Posts: 358
Likes: 2
From: Waukesha, WI
Car: 86 Camaro Z28
Engine: LT1 200cc Ai heads and cam
Transmission: T56
Axle/Gears: 4.10:1 Zexel Torsen
Re: TBI with ECM or Carburator
I would recommend TBIchips.com. He is very helpful with the info, and can do a mail order chip for your car. If it ever needs a retune, he will do it for free. I had a hot chip programmed for my truck, and then I did a mild build after that. He reimbursed me the value of my chip towards the custom chip. He also does TPI.
Thread Starter
Junior Member
Joined: Feb 2011
Posts: 82
Likes: 0
Car: 92 camaro RS
Engine: Moded 350 engine
Transmission: 5 speed
Re: TBI with ECM or Carburator
Is carburetor the way to go? is it where i am going to get the most out of my build?
Do i go with the current 305 engine that is in my car now? will sticking with the current engine reduce electrical problems down the road?
do i keep the computer or go carburetor?
i am having trouble making these decisions, otherwise doing the build and making the parts list is easy.
Do i go with the current 305 engine that is in my car now? will sticking with the current engine reduce electrical problems down the road?
do i keep the computer or go carburetor?
i am having trouble making these decisions, otherwise doing the build and making the parts list is easy.
Junior Member
Joined: Jan 2012
Posts: 25
Likes: 0
From: indiana
Car: 87 Iroc
Engine: 305 for now
Transmission: 700r4
Axle/Gears: 10 bolt posi 3.08 gears
Re: TBI with ECM or Carburator
its your own personal preference no one can make the decision for you as far as the 305 goes i wouldnt build it id just go with a 350 and if you do all the electrical right then you shouldnt have any problems just do alot of research and talk to everyone you can but the decision is ultimately yours
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Junior Member
Joined: Jan 2012
Posts: 25
Likes: 0
From: indiana
Car: 87 Iroc
Engine: 305 for now
Transmission: 700r4
Axle/Gears: 10 bolt posi 3.08 gears
Re: TBI with ECM or Carburator
yea ive always been nervous bout it also but if you dont try then you will never learn
Thread Starter
Junior Member
Joined: Feb 2011
Posts: 82
Likes: 0
Car: 92 camaro RS
Engine: Moded 350 engine
Transmission: 5 speed
Re: TBI with ECM or Carburator
tell me your thoughts on these articles. they are quite convincing
http://www.carcraft.com/techarticles...d/viewall.html
http://www.superchevy.com/technical/...d/viewall.html
http://www.carcraft.com/techarticles...d/viewall.html
http://www.superchevy.com/technical/...d/viewall.html
Junior Member
Joined: Jan 2012
Posts: 25
Likes: 0
From: indiana
Car: 87 Iroc
Engine: 305 for now
Transmission: 700r4
Axle/Gears: 10 bolt posi 3.08 gears
Re: TBI with ECM or Carburator
im not gonna lie thats not bad for some 305s but you said you was wanting to do a build and even they said if your building something go with the 350 but if your really intent on the 305 then i wish you the best of luck and keep us posted
Last edited by 87iz28383; May 29, 2012 at 05:14 PM.
Joined: Jul 2007
Posts: 358
Likes: 2
From: Waukesha, WI
Car: 86 Camaro Z28
Engine: LT1 200cc Ai heads and cam
Transmission: T56
Axle/Gears: 4.10:1 Zexel Torsen
Re: TBI with ECM or Carburator
I would say stay with FI for drivability. wiring is not an issue if it already is TBI. just put a 350 under it, the truck TBs can be found everywhere.
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